Flush-tank



(No Model.)

J. WILSON.

FLUSH TANK. No. 354,000. Patented Dec. 7,1886.

N PETERS Pholo-Lrlhugruphcn wmm m. u. C

NITED STATES PATENT Fries.

FLUSH-TANK.

EEPECIPICATION forming part of Letters Patent No. 354,000, dated December 7, 1886.

Application filed May 1(, 1886. Serial No. 201,680. (No model.)

To aZZ whom it may concern.-

Be it known that I, J osnrn WILsoN, a citizen of the United States, and a resident of Philadelphia, Pennsylvania, have invented an Improvement in Valves for Flush-Tanks for Water-Closets; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being bad to the annexed drawings, making part hereof.

The nature of my invention will be fully apparent from the following specification and claims. Its object is to provide flush-tanks with a cheap combined valve and overflow, which will much lessen the cost of apparatus of this class.

In the drawings, Figure l is a plan view of a flush-tank provided with my valve; Fig. 2, a longitudinal vertical sectional view thereof, showing also the ball-cock; Fig. 8, a detached perspective view of my valve.

Ais the tank, which maybe of wood or metal.

B is my valve, composed of a heavy mass of metal. I shall use cast-iron. The lower surface of this valve is nearly fiat, but in the form of the segment of a sphere, the center of which sphere is above the center of gravity of the mass when the valve is in place in the tank, whereby the valve'will tend to drop ina direct vertical line and thus fairly seat itself.

0 is the seat to receive the valve, which may be flat, as shown, or may be concave, to receive the rounded lower surface of the valve.

D is a passage or opening passing vertically through the valve, to permit an overflow of the excess of water in the tank when the water rises above the height of the valve when the latter is seated. This opening, instead of passing through the top of the valve, may be passed from the bottom thereof upward to any desired point and thence outward through the side. The water in the tank would then lise to the point of the opening through the side of the valve,and the excess would then run off. This passage-way opens below through the bottom of the valve, and when the latter is seated is flush with the pipe E, which conducts the water to the closet to be cleared or flooded. The valve B is provided above with a loop, F. I

Gris a rod provided with a crank, H, and

the water supply pipe P, the float, rod, andvalve constituting the ordinary ball-cock well known in the arts to supply vessels with water when the supply is constant and the demand intermittent. it serves to keep the water at a desired level. lVhen the valve is seated, as shown in full lines in Fig. 2, the water is held in the tank and the cranks H and J on opposite sides of rod G (see Fig. 1) are in the same horizontal plane. A pull on the cord or chain K draws down the end of crank J, turns rod G, and raises crank H, thus raising the valve from its seat, as shown in dotted lines, Fig. 2. When the cord K is released, the weight of the valve will induce it to desccnd and seat itself. Guide-rods M may be used, if desired, to direct the vertical movements of the valve and aid it in seating itself truly; but it will be found in practice that the weight of the valve itself will bring it to its seat. If the seatis flat, as shown, a continuous use of the valve will cause it to wear a concave depression in the seat.

Other methods of raising and lowering the valve will readily suggest themselves to the mind of an ordinarily-skilled mechanic, but the means shown will answer for all practical pu rposcs, and are, moreover,simple and cheap.

The water is kept at a desired level by the ball-cock; but if by any accident to this cock the water should rise above this level the excess will pass off through the overflow-opening D in the valve B. The height of the upper part of opening D should be at that level above which it is desired that the water in tank A should not rise. The valve B should be of such height that when seated the distance between the bottom of the tank and the upper part of opening D may be made equal to the depth of water desired in the tank A.

XVhat l claim as new is- 1. In combination with a flush-tank for water-closets,the valve B, the lower face of which too is the segment of a sphere, the center ofwhieh always tend to stand upright and seat itself sphere is located above the center of gravity when raised and dropped, said valve being of the mass of the valve, whereby the latter pierced with apassage-way,D,adapted to open will always tend to stand upright and seat itbelow into the flush-pipe E when the valve is Is 5 self when raised and dropped, substantially as seated,and above into the interior of the tank described. 7 A at the desired Water-level, substantially as 2. In combination with a flush-tank for wadescribed. 7 ter-closets, the valve B, the lower face of which JOSEPH WILSON. valveis the segment of a sphere the center of Witnesses: [O which is located above the center of gravity of F. T. CLARK,

the mass of the valve, whereby the latter will W. H. CARSON. 

